<template>
  <div class="app-container">
    <el-form :model="queryParams" ref="queryForm" size="small" :inline="true" v-show="showSearch" label-width="68px">
      <el-form-item label="标题" prop="title">
        <el-input
          v-model="queryParams.title"
          placeholder="请输入标题"
          clearable
          @keyup.enter.native="handleQuery"
        />
      </el-form-item>
      <el-form-item>
        <el-button type="primary" icon="el-icon-search" size="mini" @click="handleQuery">搜索</el-button>
        <el-button icon="el-icon-refresh" size="mini" @click="resetQuery">重置</el-button>
      </el-form-item>
    </el-form>

    <el-row :gutter="10" class="mb8">
      <el-col :span="1.5">
        <el-button
          type="primary"
          plain
          icon="el-icon-plus"
          size="mini"
          @click="handleAdd"
          v-hasPermi="['knowledge:courseinfo:add']"
        >新增</el-button>
      </el-col>
      <el-col :span="1.5">
        <el-button
          type="success"
          plain
          icon="el-icon-edit"
          size="mini"
          :disabled="single"
          @click="handleUpdate"
          v-hasPermi="['knowledge:courseinfo:edit']"
        >修改</el-button>
      </el-col>
      <el-col :span="1.5">
        <el-button
          type="danger"
          plain
          icon="el-icon-delete"
          size="mini"
          :disabled="multiple"
          @click="handleDelete"
          v-hasPermi="['knowledge:courseinfo:remove']"
        >删除</el-button>
      </el-col>
      <el-col :span="1.5">
        <el-button
          type="warning"
          plain
          icon="el-icon-download"
          size="mini"
          @click="handleExport"
          v-hasPermi="['knowledge:courseinfo:export']"
        >导出</el-button>
      </el-col>
      <right-toolbar :showSearch.sync="showSearch" @queryTable="getList"></right-toolbar>
    </el-row>

    <el-table v-loading="loading" :data="courseinfoList" @selection-change="handleSelectionChange">
      <el-table-column type="selection" width="55" align="center" />
      <el-table-column label="${comment}" align="center" prop="id" />
      <el-table-column label="缩略图" align="center" prop="thumbnail" width="100">
        <template slot-scope="scope">
          <image-preview :src="scope.row.thumbnail" :width="50" :height="50"/>
        </template>
      </el-table-column>
      <el-table-column label="标题" align="center" prop="title" :show-overflow-tooltip="true" />
      <el-table-column label="简介" align="center" prop="briefIntroduction" :show-overflow-tooltip="true"/>
      <el-table-column label="正文" align="center" prop="content" :show-overflow-tooltip="true" />
      <el-table-column label="视频链接" align="center" prop="videoUrl" />
      <el-table-column label="菜单名称" align="center" prop="menuName" />
      <el-table-column label="文件类型" align="center" prop="fileType" >
        <template slot-scope="scope">
          <span v-if="scope.row.fileType === 1">图文</span>
          <span v-if="scope.row.fileType === 2">视频</span>
        </template>
      </el-table-column>
      <el-table-column label="操作" align="center" class-name="small-padding fixed-width">
        <template slot-scope="scope">
          <el-button
            size="mini"
            type="text"
            icon="el-icon-edit"
            @click="handleUpdate(scope.row)"
            v-hasPermi="['knowledge:courseinfo:edit']"
          >修改</el-button>
          <el-button
            size="mini"
            type="text"
            icon="el-icon-delete"
            @click="handleDelete(scope.row)"
            v-hasPermi="['knowledge:courseinfo:remove']"
          >删除</el-button>
        </template>
      </el-table-column>
    </el-table>

    <pagination
      v-show="total>0"
      :total="total"
      :page.sync="queryParams.pageNum"
      :limit.sync="queryParams.pageSize"
      @pagination="getList"
    />

    <!-- 添加或修改课程对话框 -->
    <el-dialog :title="title" :visible.sync="open" width="80%" append-to-body>
      <el-form ref="form" :model="form" :rules="rules" label-width="80px">
        <el-form-item label="标题" prop="title">
          <el-input v-model="form.title" placeholder="请输入标题" />
        </el-form-item>
        <el-form-item label="菜单名称" prop="title">
          <el-select clearable filterable v-model="form.menuName" style="width: 100%">
            <el-option label="每周心理学" value="每周心理学"/>
            <el-option label="家长云课堂" value="家长云课堂"></el-option>
            <el-option label="特色课程" value="特色课程"></el-option>
            <el-option label="心理小剧场" value="心理小剧场"></el-option>
            <el-option label="实习就业" value="实习就业"></el-option>
            <el-option label="文字碎集" value="文字碎集"></el-option>
            <el-option label="阳光影集录" value="阳光影集录"></el-option>
          </el-select>
        </el-form-item>
        <el-form-item label="简介" prop="briefIntroduction">
          <el-input v-model="form.briefIntroduction" type="textarea" placeholder="请输入内容" />
        </el-form-item>
        <el-form-item label="缩略图" prop="thumbnail">
          <image-upload :limit="1" v-model="form.thumbnail"/>
        </el-form-item>
        <el-form-item label="课程类型" prop="fileType">
          <el-radio-group v-model="form.fileType">
            <el-radio :label="1">图文</el-radio>
            <el-radio :label="2">视频</el-radio>
          </el-radio-group>
        </el-form-item>
        <el-form-item v-if="form.fileType === 1" label="正文">
          <editor v-model="form.content" :min-height="192"/>
        </el-form-item>
        <el-form-item v-if="form.fileType === 2" label="视频链接" prop="videoUrl">
          <file-upload v-model="form.videoUrl" :fileType="['mp4']" :file-size="100"/>
        </el-form-item>
      </el-form>
      <div slot="footer" class="dialog-footer">
        <el-button type="primary" @click="submitForm">确 定</el-button>
        <el-button @click="cancel">取 消</el-button>
      </div>
    </el-dialog>
  </div>
</template>

<script>
import { listCourseinfo, getCourseinfo, delCourseinfo, addCourseinfo, updateCourseinfo } from "@/api/knowledge/courseinfo";

export default {
  name: "Courseinfo",
  data() {
    return {
      // 遮罩层
      loading: true,
      // 选中数组
      ids: [],
      // 非单个禁用
      single: true,
      // 非多个禁用
      multiple: true,
      // 显示搜索条件
      showSearch: true,
      // 总条数
      total: 0,
      // 课程表格数据
      courseinfoList: [],
      // 弹出层标题
      title: "",
      // 是否显示弹出层
      open: false,
      // 查询参数
      queryParams: {
        pageNum: 1,
        pageSize: 10,
        title: null,
        menuName: null,
        fileType: null,
      },
      // 表单参数
      form: {},
      // 表单校验
      rules: {
        thumbnail: [
          { required: true, message: "缩略图不能为空", trigger: "blur" }
        ],
        title: [
          { required: true, message: "标题不能为空", trigger: "blur" }
        ],
        briefIntroduction: [
          { required: true, message: "简介不能为空", trigger: "blur" }
        ],
        content: [
          { required: true, message: "正文不能为空", trigger: "blur" }
        ],
        videoUrl: [
          { required: true, message: "视频链接不能为空", trigger: "blur" }
        ],
        menuName: [
          { required: true, message: "菜单名称不能为空", trigger: "change" }
        ],
        fileType: [
          { required: true, message: "1 图文  2视频不能为空", trigger: "change" }
        ],
      }
    };
  },
  created() {
    this.getList();
  },
  methods: {
    /** 查询课程列表 */
    getList() {
      this.loading = true;
      listCourseinfo(this.queryParams).then(response => {
        this.courseinfoList = response.rows;
        this.total = response.total;
        this.loading = false;
      });
    },
    // 取消按钮
    cancel() {
      this.open = false;
      this.reset();
    },
    // 表单重置
    reset() {
      this.form = {
        id: null,
        thumbnail: null,
        title: null,
        briefIntroduction: null,
        content: null,
        videoUrl: null,
        menuName: null,
        fileType: 1,
        createTime: null,
        updateTime: null,
        createBy: null,
        updateBy: null
      };
      this.resetForm("form");
    },
    /** 搜索按钮操作 */
    handleQuery() {
      this.queryParams.pageNum = 1;
      this.getList();
    },
    /** 重置按钮操作 */
    resetQuery() {
      this.resetForm("queryForm");
      this.handleQuery();
    },
    // 多选框选中数据
    handleSelectionChange(selection) {
      this.ids = selection.map(item => item.id)
      this.single = selection.length!==1
      this.multiple = !selection.length
    },
    /** 新增按钮操作 */
    handleAdd() {
      this.reset();
      this.open = true;
      this.title = "添加课程";
    },
    /** 修改按钮操作 */
    handleUpdate(row) {
      this.reset();
      const id = row.id || this.ids
      getCourseinfo(id).then(response => {
        this.form = response.data;
        this.open = true;
        this.title = "修改课程";
      });
    },
    /** 提交按钮 */
    submitForm() {
      this.$refs["form"].validate(valid => {
        if (valid) {
          if (this.form.id != null) {
            updateCourseinfo(this.form).then(response => {
              this.$modal.msgSuccess("修改成功");
              this.open = false;
              this.getList();
            });
          } else {
            addCourseinfo(this.form).then(response => {
              this.$modal.msgSuccess("新增成功");
              this.open = false;
              this.getList();
            });
          }
        }
      });
    },
    /** 删除按钮操作 */
    handleDelete(row) {
      const ids = row.id || this.ids;
      this.$modal.confirm('是否确认删除课程编号为"' + ids + '"的数据项？').then(function() {
        return delCourseinfo(ids);
      }).then(() => {
        this.getList();
        this.$modal.msgSuccess("删除成功");
      }).catch(() => {});
    },
    /** 导出按钮操作 */
    handleExport() {
      this.download('knowledge/courseinfo/export', {
        ...this.queryParams
      }, `courseinfo_${new Date().getTime()}.xlsx`)
    }
  }
};
</script>
